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Screenshot of the CAS Common Chemistry database with information about caffeine ().. A CAS Registry Number [1] (also referred to as CAS RN [2] or informally CAS Number) is a unique identification number, assigned by the Chemical Abstracts Service (CAS) in the US to every chemical substance described in the open scientific literature, in order to index the substance in the CAS Registry.
Cash Box described the lyrics saying that "in James Taylor fashion, Jim Croce tries to track down his long lost lover with the help of the operator." [3] The song relates one side of a conversation with a telephone operator. The speaker is trying to find the phone number of his former lover, who has moved to Los Angeles with his former best friend.
All three parts of the name are subject to change, especially in the case of a producing well. When an oil or gas field is sold, the operator name will change. If a field is unitized for enhanced oil recovery, the well number and lease name will change. Almost three million wells have been drilled for oil and gas in the United States.
In the quantum mechanics study of optical phase space, the displacement operator for one mode is the shift operator in quantum optics, ^ = (^ † ^), where is the amount of displacement in optical phase space, is the complex conjugate of that displacement, and ^ and ^ † are the lowering and raising operators, respectively.
A check or check mark (American English), checkmark (Philippine English), tickmark (Indian English) or tick (Australian, New Zealand and British English) is a mark ( , , etc.) used in many countries, including the English-speaking world, to indicate the concept "yes" (e.g. "yes; this has been verified", "yes; that is the correct answer", "yes ...
The cajo project Free dynamic transparent distributed computing in Java 1212: Unofficial: Equalsocial Fediverse protocol 1214: Yes: Kazaa: 1220: Yes: Assigned: QuickTime Streaming Server administration [11] 1234 Yes: Infoseek search agent Unofficial: VLC media player default port for UDP/RTP stream 1241: Unofficial: Nessus Security Scanner ...
An annihilation operator (usually denoted ^) lowers the number of particles in a given state by one. A creation operator (usually denoted ^ †) increases the number of particles in a given state by one, and it is the adjoint of the annihilation operator.
An ID number is a third type of identification number used for hazardous substances being offered for air transport. Substances with an ID number are associated with proper shipping names recognized by the ICAO Technical Instructions. [1] ID 8000, Consumer commodity does not have a UN or NA number, and is classed as a Class 9 hazardous material.